Fix some CI lint errors

roles/matrix-bot-maubot/tasks/init.yml

@@ -4,8 +4,9 @@
     matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-bot-maubot.service'] }}"
   when: matrix_bot_maubot_enabled|bool
 
+- block:
     - name: Generate Maubot proxying configuration for matrix-nginx-proxy
-  set_fact:
+      ansible.builtin.set_fact:
         matrix_bot_maubot_matrix_nginx_proxy_configuration: |
           location ~ ^/(_matrix/maubot/.*) {
           {% if matrix_nginx_proxy_enabled|default(False) %}
@@ -25,7 +26,7 @@
       when: matrix_bot_maubot_proxy_management_interface|bool
 
     - name: Register Maubot's proxying configuration with matrix-nginx-proxy
-  set_fact:
+      ansible.builtin.set_fact:
         matrix_nginx_proxy_proxy_matrix_additional_server_configuration_blocks: |
           {{
             matrix_nginx_proxy_proxy_matrix_additional_server_configuration_blocks|default([])
@@ -35,7 +36,7 @@
       when: matrix_bot_maubot_proxy_management_interface|bool
 
     - name: Warn about reverse-proxying if matrix-nginx-proxy not used
-  debug:
+      ansible.builtin.debug:
         msg: >-
           NOTE: You've enabled Maubot but are not using the matrix-nginx-proxy
           reverse proxy.